A new study finds celiac patients can safely smooch even though small amounts of gluten may be transferred. A few ounces of water may be the best protection.
A simple glass of water may keep people with celiac disease safe when they smooch.
A new study finds that while kissing does transfer gluten, the amount is minimal, especially if both partners enjoy a few ounces of H2O beforehand.
Celiac disease is an autoimmune disorder that can damage your small intestines when you eat gluten, a protein found in wheat, barley and rye.
Researchers conducted a two-part study with 10 couples — each included one partner with the disorder.
In both sessions, the non-celiac partner ate 10 saltine crackers and then the couple kissed for 10 seconds. But the second time around, the couple was asked to drink 4 ounces of water before kissing.
Saliva tests showed gluten transfer was minimal in both situations in the majority of participants.
However, the researchers say adding water to the equation lowered gluten to the safest level in all cases…. less than 20 parts per million, which is the amount allowed in food products labeled gluten-free.
One author says these findings show celiac patients don’t have to “go to extremes” to protect their health.
She says, “Patients with celiac disease can be more relaxed, knowing that the risk of gluten cross-contact through kissing a partner who has consumed gluten can be brought down to safe levels if food is followed by a small glass of water.”
Source: Digestive Disease Week 2025
Author Affiliations: Columbia University
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